Ch 37.5 - Plant Nutrition & Soil

Question 1

Soil

Answer 1

outer layer of earths crust
sand, rocks, clay , silt, minerals
92 naturally occurring elements
Inorganic compounds = minerals

Question 2

Topsoil

Answer 2

Where most roots are found
Humus: partly decaying organic matter
Roots hold topsoil in place to protect the rest the soil

Question 3

Plant Nutrients

Answer 3

Photosynthesis

Fixation of CO2 into simple sugars

Question 4

Macronutrients

Answer 4

Nine:
C
O
H
N
K
Ca
Mg
P
S

Question 5

Micronutrients

Answer 5

Seven:
Cl
Fe
Mn
Zn
B
Cu
Mo

Question 6

Symbiosis

Answer 6

Usually wiith mycorrhizal fungi
Expand surface area for nutrient uptake
Enhance uptake of micronutrients

Question 7

Carnivorous Plants

Answer 7

Grow in acidic soil
Trap insects
Modified leaves
Digest with enzymes

Question 8

Carnivorous Plants

Answer 8

Pitcher Plant: pitcher shaped leaves filled with digestive fluid
Venus Flytrap: “Jaw” that snaps
Sundews: sticky digestive mucus
Waterwheel: snaps to catch aquatic animals

Question 9

Parasitic Plants

Answer 9

3000 types

Indian pipe hooks into host tree through mycorrhizae